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​In June 2015, we submitted a facility application to the Alberta Utilities Commission (AUC) for approval to modify the existing Rossdale substation (Application 20581-A001). The substation is located at 9500 - 104 Street NW. On May 13, 2016 we received approval from the AUC to begin construction (Decision No. 20581-D02-2016). Construction was initiated in June of 2016 and is expected to be completed February of 2020 (originally June 2018).


​We're upgrading

New indoor electrical equipment, switchgear, is needed at the existing Rossdale Substation to ensure that we can continue to provide central Edmonton with safe and reliable power service. To accommodate the new equipment, we received approvals to add an extension onto our existing Rossdale Substation building. This new building extension will be within our existing Rossdale site area.

What will the building extension look like?

To fit with the surrounding area, the building extension will look similar to the existing Rossdale Substation building. The height of the building extension will match that of the existing building, and the extension will be approximately 18 Meters long by 10 Meters wide for the larger section and approximately 7 Meters long by 7 Meters wide for the smaller section. The walls will be made out of concrete with a brick finish, closely matching those of the existing building. The new building extension is required to house new switchgear.  


Relocation of existing equipment

In order to make room for the new extension, existing outdoor electrical infrastructure will need to be relocated.

  • Existing service transformers and switching cubicles, currently located on the north side of the existing building, will be updated to meet new standards and relocated to the west side of the substation property.
  • Existing current-limiting electrical equipment, also located on the north side of the existing building, will be replaced and relocated to the east side of the existing building.

In addition to the relocation of existing outdoor electrical infrastructure, we will need to install new cable trays. These cable trays will support the power cables that connect the current limiting electrical equipment to the existing building and the building extension.

Some of the functions of this existing outdoor equipment include:

  • Converting power to a level that can be used for the substation lighting, as well as communications, and protection and control equipment.
  • Providing surge protection.

Artist rendering, overhead view from the North.




Artist rendering, overhead view from the South.

Construction Details

What to expect during construction

The work will create typical noise associated with construction. We will take measures to ensure we comply with the City of Edmonton’s Community Standards Bylaw for Noise Control. If it’s necessary to temporarily exceed acceptable noise levels, we will work with the City of Edmonton to obtain the necessary permits.

Hours of construction

We anticipate our hours of work for this project to be Monday to Friday from 7:30 a.m. to 5:00 p.m.; however, occasional evening and weekend work may be required.

Fence changes

At this time, no changes to the existing perimeter fence are anticipated as a part of this project.
Sections may be temporarily removed for construction access, but they will be reinstalled after the work is completed.


In order to complete the building expansion, and allow for construction access, it is anticipated that 8 trees will need to be removed. A Landscape Architect will be engaged to evaluate and implement the best options for the restoration of the Rossdale Substation site to its preconstruction condition, including replanting as many trees as possible.

Road closures

No public road closures are expected from construction on this project.

Power supply

No interruptions to power services are anticipated as a result of this project.

Work space

All work areas will be safe and secure. All construction activities will be in accordance with the City of Edmonton bylaws, occupational health, safety and environmental procedures and guidelines.